21157052

素因数分解:

$2^2\times 7^1\times {\mathrm{281}}^1\times {\mathrm{2689}}^1$

素因数の和:2981

約数の個数: 24

約数和(自身を含む): 42480480

約数和(自身を除く): 21323428

約数列:

[1, 2, 4, 7, 14, 28, 281, 562, 1124, 1967, 2689, 3934, 5378, 7868, 10756, 18823, 37646, 75292, 755609, 1511218, 3022436, 5289263, 10578526, 21157052]

約数ペア:

[(1, 21157052), (2, 10578526), (4, 5289263), (7, 3022436), (14, 1511218), (28, 755609), (281, 75292), (562, 37646), (1124, 18823), (1967, 10756), (2689, 7868), (3934, 5378)]